previous_image_link() WP 1.0

Displays previous image link that has the same post parent.

No Hooks.

Nothing (null).

previous_image_link( $size, $text );

$size(string/array): Image size. Accepts any valid image size, an array of width and height values in pixels (in that order), 0, or 'none'. 0 or 'none' will default to 'post_title' or $text.
Default: 'thumbnail'
$text(string): Link text.
Default: false

<?php
function previous_image_link( $size = 'thumbnail', $text = false ) {
	adjacent_image_link( true, $size, $text );
}